Abstract
AbstractAnalysis and design by contract allows the definition of a formal agreement between a class and its clients, expressing each party’s rights and obligations. Contracts written in the Object Constraint Language (OCL) are known to be a useful technique to specify the precondition and postcondition of operations and class invariants in a UML context, making the definition of object-oriented analysis or design elements more precise while also helping in testing and debugging. In this article, we report on the experiences with the development of ocl2j, a tool that automatically instruments OCL constraints in Java programs using aspect-oriented programming (AOP). The approach strives for automatic and efficient generation of contract code, and a non-intrusive instrumentation technique. A summary of our approach is given along with the results of an initial case study, the discussion of encountered problems, and the necessary future work to resolve the encountered issues.KeywordsObject Constraint LanguagePrimitive TypeModel Drive ArchitectureCollection OperationModel Drive ArchitectureThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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